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27-04-2020
Mathematics

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Given ABCD slove for X ?

Given ABCD slove for X class=

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27-04-2020

Answer:

∠D = 180°- ∠A

∠D = 180° - (30+5x)

15+10x = 180° - 30-5x

15x = 180 - 30 - 15

15x= 135

x = 9

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